SSN: Reference to OBOE

Hello SSN fans,

The Semantic Sensor Network Ontology references OBOE with the following URI:
http://dx.doi.org/10.5063/F11C1TTM

That URI seems to be the one advertised on:
https://github.com/NCEAS/oboe/

... but it yields a "DOI Not Found" error message. Do you know which URI we would use to fix it?

Thanks,
Francois.